Protocol Settings
R&S
®
EX-IQ-BOX
158
User Manual 1409.5570.32 ─ 05
Protocol Version
Selects the CPRI protocl version.
For the higher line rates the CPRI standard introduces a scrambling functionality to
increase the signals stability. The scrambling functionality is enabled if protocol version
2.0 is selected and a non zero seed is defined.
Available protocol versions are:
●
"1.0"
●
"2.0"
Line bit rate [Mbit/s]
Scrambling support
Highest available protocol ver-
sion number
1x (614.4)
Not supported
1.0
2x (1228.8)
Not supported
1.0
4x (2457.6)
Not supported
1.0
5x (3072.0)
Not supported
1.0
8x (4915.2)
Recommended
1.0: scrambling not supported
2.0: scrambling supported
10x (6144.0)
Recommended
1.0: scrambling not supported
2.0: scrambling supported
16x (9830.4)
Recommended
1.0: scrambling not supported
2.0: scrambling supported
Note:
When working with higher line speeds, it is strongly recommended that you use
the CPRI protocol version which supports scrambling.
Remote command:
Scrambling Seed
Defines the scrambling seed.
The initial condition of the side stream scrambler is defined by a 31 bit vector. If protocol
version 2.0 is chosen, a non zero seed has to be defined in order to activate the scram-
bling functionality.
Remote command:
Received Seed
Indicates the scrambling seed used by the connected transmitter.
Remote command:
7.2.7.5
SMA Settings
This section of the "Hardware" tab contains the electrical parameters of the SMA inter-
face.
CPRI
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